Observational limits on a millihertz stochastic background of gravitational radiation

Details Observational limits on a millihertz stochastic background of gravitational radiation Observational limits on a millihertz stochastic background of gravitational radiation

May 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990apj...354..406b&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 354, May 10, 1990, p. 406-410. Research supported by NSF.

Mathematics

Logic

1

Background Radiation, Cosmology, Gravitation Theory, Gravitational Waves, Stochastic Processes, Gravitational Wave Antennas, Line Spectra, Seismic Waves

Scientific paper

An analysis of 100 station years of quiet seismic data shows no evidence of the excitation of earth by a stochastic background of gravitational radiation. The absence of excitation of the two quadrupole modes which couple most strongly to gravitational waves (GWs) implies 1 sigma upper limts on a GW background of 1.7 x 10 to the -5th J/cu cm Hz and 6.1 x 10 to the -6th J/cu m Hz at frequencies of 0.31 mHz and 1.72 mHz, respectively. Although these limits are factors of 1300 and 33 lower than previous limits at these frequencies they are both above the critical density of the universe per octave and are, therefore, relatively uninteresting from a cosmological point of view.

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